The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 2009
Filed:
Apr. 30, 2004
Applicants:
Xiangguo Tang, Union City, CA (US);
Guozhu Long, Fremont, CA (US);
Amir H. Fazlollahi, Pleasanton, CA (US);
Inventors:
Xiangguo Tang, Union City, CA (US);
Guozhu Long, Fremont, CA (US);
Amir H. Fazlollahi, Pleasanton, CA (US);
Assignee:
Ikanos Communications Inc., Fremont, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J 1/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
To reduce the ISDN crosstalk in an incoming DSL signal, a crosstalk canceller observes at least a portion of the crosstalk signal and reproduces an estimate of the crosstalk signal for at least a portion of that signal within the DSL band. The crosstalk canceller applies a canceling signal based on the estimated crosstalk signal to reduce the crosstalk in the received DSL signal.